When a block of mass \( 0.5 \mathrm{~kg} \) is suspended from the end of a spring, it stretches ...

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When a block of mass \( 0.5 \mathrm{~kg} \) is suspended from the end of a spring, it stretches by \( 0.02 \mathrm{~m} \). Find the force constant of the spring.
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